Autonomous System
AS212443 Leonet GmbH
ISPActiveGermanyRIPE
AS212443 (LEONET-AS) is an ISP network operated by Leonet GmbH in Germany, registered with RIPE. It has 11 IPv4 prefixes with 52,736 addresses and 2 IPv6 prefixes, which makes it the 4,229th largest of 82,223 active autonomous systems by IPv4 space.
IPv4 addresses52,736in 11 prefixes
IPv6 prefixes2≈ 2.4 × 10²⁴ addresses
Size rank#4,229of 82,223 active ASNs
Details
OrganizationLeonet GmbH
AS nameLEONET-AS
Websiteleonet.de
Country Germany (DE)
Network typeISP
RegistryRIPE
Abuse contactabuse@leonet.de
Registered2026-04-28
Last updated2026-09-07
IPv4 prefixes
11 prefixes · 52,736 addresses| Network | Addresses | First – last address |
|---|---|---|
| 88.133.0.0/17 | 32,768 | 88.133.0.0 – 88.133.127.255 |
| 109.199.160.0/19 | 8,192 | 109.199.160.0 – 109.199.191.255 |
| 88.133.128.0/20 | 4,096 | 88.133.128.0 – 88.133.143.255 |
| 5.22.240.0/21 | 2,048 | 5.22.240.0 – 5.22.247.255 |
| 88.133.156.0/22 | 1,024 | 88.133.156.0 – 88.133.159.255 |
| 91.235.8.0/22 | 1,024 | 91.235.8.0 – 91.235.11.255 |
| 185.9.64.0/22 | 1,024 | 185.9.64.0 – 185.9.67.255 |
| 185.18.36.0/22 | 1,024 | 185.18.36.0 – 185.18.39.255 |
| 185.93.200.0/22 | 1,024 | 185.93.200.0 – 185.93.203.255 |
| 109.199.190.0/24 | 256 | 109.199.190.0 – 109.199.190.255 |
| 109.199.191.0/24 | 256 | 109.199.191.0 – 109.199.191.255 |
88.133.0.0/17 109.199.160.0/19 88.133.128.0/20 5.22.240.0/21 88.133.156.0/22 91.235.8.0/22 185.9.64.0/22 185.18.36.0/22 185.93.200.0/22 109.199.190.0/24 109.199.191.0/24
IPv6 prefixes
2 prefixes- 2a01:a980:6::/48
- 2a01:a980:7::/48
2a01:a980:6::/48 2a01:a980:7::/48
Query AS212443 with the API
The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day.
curl "https://api.ipapi.is/?q=AS212443&key=YOUR_API_KEY"Any address in its prefixes resolves to AS212443, with or without a key:
curl "https://api.ipapi.is/?q=88.133.0.1"Largest networks in Germany
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